compositions



52. COMPOS poas ,or with the n l WILLIAM JONES MnNzms, on s'r. HELENS,oo NTY or LANoAs'rER,

. ENGLAND.

MANUFACTURE OF SOAP BY THE COLD PROCESS.

SPECIFICATION forming part of Letters Patent No. 345,715, dated July 20,1886.

5 Vented a new and useful Improvement in the Manufacture of Soap by theGold Process, of which the following is a specification.

Soap has been heretofore made in considerable quantities by what isknown as the cold process] especially by housekeepers in making theirown soap, by the use of caustic soda, which is putup in smallconvenient-sized packages adapted for use, and is sold in the marketunder the name of Concentrated the manufacture of this soap areconcentrated lye, tallow, waste grease, and kitchen fat. A seriousdefect for washing purposes in soap thus made arises from the fact thatverylittle lather is formed, owing to its being only to a very slightextent soluble in water, thus making avery poor lather, and as the fator grease is likely to have become rancid or discolored by standing, thesoap produced is apt to be discolored and dark and not to present at alla sightly appearance.

The object of my invention is to overcome all the difficulties anddefects, as well as any danger which might arise to the skin by the useof impure fat, grease, or tallow in the manufacture of said soap, and toprovide a soap-making compound that, when dissolved in the properquantity of water and combined with the right amount and weight oftallow, grease, oil, or waste kitchen fat, will produce a soap by thecold process whichris not only a white soap, much -more soluble than anyhitherto made,and one which will produce a full and soft lather,rendering the soap very valuable for washing and toilet purposes, butone which also possesses a good degree of bleaching and deoxidizing ordisinfecting properties, thus making it especially useful for laundries,hospitals, and other large or public institutions where large quantitiesof promiscuous clothinghave' to be washed in bulk. I obtain theseresults by making a mixture or compound of high-test powdered causticsoda refined wt amwf I I I I I pgghstrong chloride of lime orbleachingpowder in proportions of about seventy to Lye. The ingredientsusually employed in.

Application filed May 22, 1886. Serial No. 203,020. (No specimens.)-

eighty parts of high-test caustic soda, fifteen to twenty five hydratedcarbonate of potash, and fiye parts of chloride of lime orbleaching-powder. These proportions are not absolute, but are, as I'have found, productive of the best results.

To make the soap I have found it best to dissolve the compound thusformed in about three times its weight of cold water, as thisimmediately precipitates the lime by converting the chloride of limeinto chloride of pot ash or chloride of soda. The clear liquor can bedrained 01f, leaving the lime-sediment, or it may be allowed to stay inthe'lye, as it does not interfere with the soap-making properties. Ithen take sufiicient tallow or grease to combine completely with thecaustic-soda in the mixture, which in the compound, as above stated, isabout five parts of tallow to one of the mixture. I then convert thesame into soap by the cold process before referred to, in the usualmanner. potash remains mixed through-moansmg -n to be quite soluble, andtherefore to lather freely and greatly to improve the washing qualitiesof the soap. Part of the chloride of potash or chloride of soda is firstconsumed,

- thoroughly bleaching and purifying thelather or grease, and the excessremaining in the soap is an oxidizing or purifying agent.

I claim- 1. A compound consisting of a mixture of caustic soda,carbonate of potash, and chloride of lime for soap-making purposes, asabove described.

2. A bleaching and disinfecting soap made by the mixing of the compoundof caustic soda, carbonate of potash, and chloride of lime,

herein described,with the grease in the manufacture of soap,substantially as set forth.

3. A compound consisting of a mixture of sulphate of potash and causticsoda for soapmaking purposes, as hereinbefore described. 4. A compoundconsisting of a mixture of caustic soda and carbonate of potash forsoapmaking purposes, as hereinbefore described. In witness whereof Ihave hereunto set my hand.

-WILLIAM JONES MENZIES. Witnesses:

O. B. MORRIS, W. P. PREBLE, Jr.

PATENT .OFFICE. l

The carbonate of

